Furnace-grate.



Patented Dec. 2, I902.

" No. 7l4,864.

W. E. COLE.

FURNACE GBATE.

Application filed Nov. 18, 1900.)

I (No Model.)

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F|e.5.' INVENTOR:

m: vlunms PETERS co. Puma-Ln UN rrnn STATES PATENT ()FFICE.

WVIIJLIAM E. COLE, OF ATLANTA, GEORGIA.

FU RNACE-G RATE.

SPECIFICATION formingpart of Letters Patent N 0. 714,864, dated December 2, 1902. Application filed November 18, 1900. Serial No. 36,422. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM E. COLE, a citizen of the United States, residing at the city of Atlanta, in the county of Fulton and State of Georgia, have invented certain new and useful Improvements in Furnace-Grates, of which the following is a specification.

This invention relates to the class known as shaking or rocking grates; and it consists in alternate movable bars resting on rocker-shafts which are operated by a lever, the arrangement of parts being hereinafter more fully described, my object being to provide a shaking self-cleaning grate for fur naces that is simple in construction, easy to operate, and that will not be affected by expansion or contraction.

In the accompanying drawings, Figure l is a plan or top view of grate; Fig. 2, a longitudinal sectional elevation; Fig. 3, a transverse sectional elevation, and Figs. 4, 5, and 6 are detail perspective views of the various styles of bars of which said grate is composed.

Similar letters of reference indicate like parts throughout.

The letter A represents the walls inclosing furnace, which may be, as usual, of brick, having inserted therein the ordinary front and rear bearing-bars, upon which rest the stationary grate-bars B and B, the same having expanded ends or heads, so that they will fit against each other across the furnace and still leave sufficient room between them transversely to permit the introduction of the alternate vertically-moving bars 0, which rest, as shown, upon the upper plane surfaces of the cam-shaped rocker-shafts D, these being provided with the journals (1, by means of which they may be pivoted eitherin suitable bearings fixed in the adjacent side walls or in the pendent lugs or hangers b, which may be formed integrally with the stationary bars B, as shown in Figs. 3 and at, or, if desired, be separate parts attached thereto, said bars B being placed one on each side of furnace, as also shown. By e e are represented projections or arms extending downward from said rocker-shafts to which is pivoted the connecting-bar f, the forward arm having formed therein a socket to receive the operating-lever g.

It will be observed that both the stationary and movable bars are wedge-shaped in their vertical section, the former being thickest at the top and thinnest at the bottom, the latter being the reverse, so that the same may be raised and lowered freely without binding or jamming, guides being formed on either or both bars, though preferably on the stamovement and regulate the spaces between them, a similar result being obtained in either case; also, the stationary bars are reduced in depth at their extremities, so that the camshafts may rock beneath without touching. The operation and advantages of my improved device are as follows: By pressing down upon the lever g the rocker-shafts are caused to partly rotate in unison, their camshaped edges turning upward, thereby actuating the movable bars, so that their top surfaces are raised simultaneously above the level of the stationary bars, and at the same time given a slight forward movement, which is admissible on account of the same being made somewhat shorter than the space allotted to them longitudinally between the aforesaid heads of the stationary bars, this mechanical movementlikewise raising and shaking the fuel, and consequently breaking the clinkers and removing the ashes from the bottom of the fire. When the above operation is completed and the depressing-lever is released, the parts are returned by their own Weight to former positions. The said movable bars having no rigid connection, expansion and contraction will not prevent them from working, the rocking cam-shafts difiering from those that have heretofore been used forthis purpose in being perfectly flat and level along their entire upper surface, so as to afford a continuous hearing from end to end,so that there is no possibility of any of the bars being displaced laterally, and every bar being separate, having no fixed connection with any other, they may be taken out and replaced as readily and quickly as if they all were of the usual construction. The stationary bars may be made two-ply or they may be one-ply, with teeth on one or' both sides, or any other suitable form that is desired, I hereby reserving the right to vary the same as conditions may require so far as allowable tionary bars alone, as shown, to control this without departing from the nature of this invention.

I do not claim, broadly, Vertically-moving grate-bars, as I am aware of the previous application of same; but

What I do claim as new, and desire to secure by Letters Patent, is-

2. In furnace-grates, a series of stationary bars having heads upon their ends which abut so as to properly space the same, said bars being thickest at their upper edges, combined with another series of separate alternately-placed vertically-moving bars that are thickest at their lower or bearing edges, and are shorter than the space between the heads of said stationary bars so as to allow them longitudinal movement, either or both series of bars having guides upon their sides, and the cam-shaped rocking bars or shafts forming bearings for the movable bars only, and wherever they may rest, the said rocking bars having suitable connection to cause them to move in unison, for the purpose specified.

WILLIAM E. COLE.

In presence of- H. L. FLEMING, GEORGE L. GoRMAN. 

